Log-cutting machine



J. E. MITCHELL AND D. PARKS.

's cumwe MACHINE.

APPLICATION FILED JULY 5,1917.

6 SHEETS-SHEETI 5 v2 3.v I 11 Mae/).

Patented Mar. 9, 1920.

.I. E. MITCHELL AND D. PARKS.

LOG CUTTING MACHINE.

APPLICATION FILED JULY 5. I917.

v W I 1; E. MITCHELL AND 0. PARKS.

LOG CUTTING MACHINE.

APPLICATION FILED JULY 5.191].

I Patented Mar. 9, 1920.

6 SHEETSSHEET 4.

- ind M7005: 170 5. 47/76/6252 J. E. MITCHELL AND D. PARKS.

' LOG CUTTING MACHINE.

APPLICATION FILED JULY 5,1917.

1 ,332,912. Patented Mar. 9,1920.

6 SHEETS-SHEET 5.

ATTOFMK I. E. MITCHELL AND D. PARKS.

LOG CUTTING MACHINE.

APPLICATION FILED JULY 5, I917.

Patehted Mar. 9,1920.

6 SHEET$SHEET 6.

r/w f/vraea Jay/v15: M/767/EL 4 o /v/ws DAVE/V5 W k fiw UNITED STATESPATENT OFFICE.

JOHN E. MITCHELL AND DENNIS PARKS, or s LOUIS, MISSOURI.

LOG-CUTTING- MACHINE.

Specification of Letters Iatent.

Patented Mar. 9, 1920.

Application filed July 5, 1917. Serial No. 178,527.

To all whom it may concern Be it known that we, JOHN E. MITCHELL andDENNIS PARKs, citizens of the United States, residing in the city of St.Louisand State of Missouri, have invented new and useful Improvements inLog-Cutting Machines, of which the fOllOWiIlg is a specification.

This invention relates to machines of the type employed forcross-cutting an elongated piece of stock. In the present specificationthe invention is described as applied to a machine for slicing lifts orheels from heel logs. In one aspect the invention may be regarded .as animprovement on the invention set forth in our Patent No. 1,252,137,issued January 1, 1918, for log cutting machines. This type of machinecomprises two rotatable members which actuate cutting mechanism, to cutthe stock into lifts. After each lift is severed, the stock is advancedinto a new position and again held fixed while the next lift is severed.The general object of the present invention is to simplify the means foractuating the cutting me"hanism and also to provide very simple andeffective means for feeding the stock forward and for holding it whilethe lift is severed. A further object of the invention is to provide animproved gage and improved means for controlling it so that it willcooperate with the cutting mechanism. It is also one of our objects toprovide a mounting for the kni e or knives which will insure completesevering of each lift. and which will also enable the knife to maintainits proper adiusted position even if considerable regrinding has changedthenormal position of its cutting edge. v

Further obie"ts of the invention will appear hereinafter.

In the drawing which fully illustrates the preferred embodiment of ourinvention,

Figure 1 is a plan of the complete mach ne;

Fig. 2 is a side elevation;

Fi 3 is a front elevation of the mach ne 7 4 is a side elevation withparts broken a av and partly shown in c oss-section to i lustrate themeans for controlling the stage. T s view shows the gage in its inactivepositi n:

' Fi 5 is a view somewhat similar to Fig. 4. further il ustrat ng hemeans for controlling the gage, and showing the gage in its activeposition in full lines, its inactive position being shown in dottedlines;

Fig. 6 is a plan partly broken away, illustrating a detail of the meansfor developing the movement which effects the forward feeding movementof the stock and the control of the gage; Y t

Fig. 7 is a plan showing the gage in detail and illustrating its mode ofoperation;

Fig. 8 is a detail partially in elevation and partially in se'tion ofthe end of the lever that controls the gage;

Fig. 9 is a vertical cross-section taken through the machine about onthe line 99 of Fig. 2, but upon an enlarged scale, with the frame of themachine omitted;

Fig. 10 is a longitudinal vertical section taken through the machineabout on the line 10-10 of Fig. 9 with certain parts broken away orremoved;

Fig. 11 is a front elevation of the parts shown in Fig. 10, that arelocated adjacent the knives;

Fig. 12 is an elevation. with certain parts broken away and illustratingthe cutting me hanism;

Fig. 13 is a cross-sect on showing some of the parts illustrated in Fig.12;

Fig. 14: is a cross section taken t rough the parts of the machine inthe vicinity of the cutting mechanism and particularly illustrating themounting; for the cutting mechanism;

15 s a section taken on the line 15-45 of Fig. 14 and, furtherillustrating the construction of hese parts; and

Fig. 16 is a View illustratin a novel form for the knife which enab sthe knife to be clamped in adiusted positions "to maintain the cuttin ede of the blade in a substantiallv fix d relation.

I Referring part cularly to Figs. 1 to 3. inelusive. the machinecomprises a vertical housing orframe 1. This housing or frame supportstwo rotatable members preferably in the form of two pullevs 2 and 3.Ass0-.

ciated with these wheels is the cutting mechanism. which is so relatedto the wheels that when the wh els are rotated. the cutting; mechanismwill operate to sever a piece from a lenoth of stock 4.

We provide a b acket 5. see Fin. 10. whi h is supported on the up erpart of the housin 1. and this bracket is nreferab v ormed withatubular-arbor.6;. which projects horizontally, and carries the tworotatable members or wheels 2 and 3. These Wheels 2 and 3 are adjacentlymounted and are independently rotatable on the arbor. They are soarranged that they can be readily driven by belts. In order to produce arelative rotary movement or a differential movement between the twowheels, we prefer to construct the pulley 2 of slightly smaller diameterthan the pulley 3, the result of which is, that the pulley 2 will rotateat a slightly greater speed than the pulley 3 if the two driving belts 2and 3 move at the same speed. -(See Fig. 5.)

The relative rotary movement between the two pulleys 2 and 3, when theyarrive in a predetermined relation or relativeposition, operates toactuate the cutting mechanism, (see Fig. 12) which preferably includes apair of knives 7 and 8. Each knife is supported upon a carrier or arm 9,and these arms are preferably each pivoted at 11 on the inner side ofthe disk 10 of the pulley 8 (see Figs. 14 and 15). p

In order to facilitate the attachment of the knives 7 and 8 to the arms,we provide openings 12 in the disk 10 of the pulley 3, and each arm orlever 9 is provided with a distance block 13, the outer face of which isflush with the outer face of the disk 10, which is itself flush with theend of the tubular arbor 6. Onthe outer face of each of these distancepieces or blocks 13, there is mounted one of the knives 7 or 8, so thatthe kn ves move across the face of the disk 10. These knives are mountedso that their cutting edges 14 are normally withdrawn from the position,of the stock or heel log 4, and they are normally held withdrawn in thisway, by means of coiled springs 15, see Fig. 15. As the relative rotarymovement occurs each roller 16 runs along on the cam 17 on the wheel 2,and this swings the arms 9 inwardly on their pivots so that the edges 14of the cutters or knives move across the stock. In other words, the knves not only move inwardly, but by reason of the relative movementbetween the stock and the knives the knives will move around and willcut the stock on all sides. In order to insurethat the blades willcompletely cut through the sto' k, we prefer to mount the knives so thatwhen cutting one of the knives will move at its inner end, past thelongitudinal. axis of the log which s indicated at 17 in Fig. 15. Whenthe rollers reach the points 17 Fig. 12, the springs 15 withdraw theknives. Each knife is supported on a pivot bolt 18 (see Fig. 14) ,whichpasses through a hole 19 in the knife. lVe also provide a tailbolt 20,which, when the knife is first put in use may engage a shoulder 21 onthe tail of the knife, adjacent to which the knife is formed with acircumferential edge 22, lying near a fixed bolt 20, Theseknives requireto be frequently resharpened so that the cutting edge 14 tends to moveinwardly on the blade. The circumferential edge 22 and the tail-bolt 20enable the wear on the edge 14 to be readily taken up, for example, whenthis edge is worn, the bolt 20 is loosened up, and the tail end of theknife is simply adjusted so as to maintain the cutting edge 14 in itsproper relation. After the knife has been adjusted the bolt 20 istightened up again. In Fig. 16 such an adjusted position of the knife isillustrated by the dotted lines 23. vVhen the knife has been properlyadjusted in this way it is securely clamped by the tail bolt 20. Overthe knives a cap ring 12 is attached on the face of the pulley 3.

While the knives 7 and 8 are passing throu h the stock, the stock issecurely held by suitable holding means, preferably including a pair ofjaws 24 and 25, see Fig. 10, the former of which acts as a horizontaltrough or guide along which the stock advances in its feeding movement.The jaws 24 and 25 project into the tubular arbor 6 and are preferablyarranged so that their clamping action is exerted principally in thevicinity of the knives. These jaws are operated automatically to releasethe stock when the knives are withdrawn, and the stock is then advancedautomatically into proper position to enable the knives to cut off thenext lift. The lower jaw 24 is supported on the upper end of a stem 26which is guided to slide vertically in the housing 1. Near the end ofthis stem a yoke 27 is provided, see Fig. 9, the lower end of whichslides freely on the stem. The upper ends of the arms 28 which form thisyoke extend up through the upper end of the housing 1 and past theV-shaped lower jaw 24. At a suitable distance above this lower jaw 24,the upper 25 is pivotally supported on suitable pivot bolts 29, see Fig.10. The outer end of the jaw 25 is formed into two tails 30, the ends ofwhich have their fulcrums at 31 on adjustable links 32, secured on thesides of the lower jaw 24. For this purpose each link has a slot 33through which passes a clamping screw having a crossshaped hand wheel34, (see Fig. 2). When the machine is in operation the stock or log 4 isclamped between these jaws 24 and 25, but at regular intervals the slidebar 26 moves down and the yoke 27 moves up, so as to release the stockto permit it to be fed forward. This movement is controlled conjointlyby the rotatable members or wheels 2 and 3, that is to say, when thewheels 2 and 3 are in the predetermined relative rotary position whichholds the knives withdrawn, the jaws 24 and 25 will separate to permitthe forward feeding of the stock. This opening of the jaws may beefiected through the medium of a rocking pinion 35, (see Fig. 10),oneside of which engages a rack 36 formed onthe side of the stem withWebs 38, the edges of which are parallel and act as guides for the jawsas they move apart or toward each other. See Fig. 11.

We provide very simple feeding mechanism for feeding the stock or logforward when the jaws are released, and the knives withdrawn. For thispurpose, we provide a pusher which engages the back end of the stock,and this pusher is in the form of a small angular clip 39, see Fig. 2,which is simply hung on the stock, and attached to a strap or flexibleband 40. This band 40 extends longitudinally above the stock and passesaround the under side of a pulley 41, to which it is secured. Thispulley is mounted on a cross-pin 42 supported in the upper end of theyoke 27, and the outer end of this cross pin or shaft 42 is providedwith a pulley 43, from which a weight 44 is supported by a cord or strap46. The effect of this construction is to create a tension in the strap40, so that whenever the jaws are released the pusher 39 shoves thestock forward.

. The distance to which the stock advances associated with the wheels 2and 3, which.

operates in such a way that when the wheels arrive in a predeterminedrotary relation the pinion 35 will be rocked. In order to do this weprefer to develop a shifting movement of a part of the mechanism alongthe axis of rotation of the wheels, and we utilize this movement torotate the pinion. This shifting movement along the axis of rotationmay. if de sired, be developed in one of the pulleys, in the presentinstance, in the pulley 2. In order to effect this, the pulley 3, whichis the outside pulley, is preferably provided with a longitudinal hub orsleeve 47 which is rotatably mounted on the arbor 6, and the inner endof this sleeve is formed with a projecting collar 48 which is heldagainst the vertical face of the bracket 5 by means of a suitable clamp49 (see Figs. 2 and 10). The pulley 2 slides freely on this sleeve 47,and carries cams 50 which are diametrically opposite to each other; and

when the pulleys are in the position which holds the knives withdrawn,these cams come into engagement with rollers 51 on the other pulley 3(see Fig. 6). When the cams ride up on the rollers in this way, theyproduce a shifting movement of the pulley 2 on the sleeve 47. That is tosay, the shiftable, member, in the present embodiment the pulley 2 willshift toward the right as viewed in Fig. 5.

In order to impart this movement to the rocking pinion 35 we prefer toprovide a controlling member 52 which is preferably in the form of alever located at each side of the axis of rotation. These levers aresuitably supported on a pin 53 at their upper ends which issecured to abracket 54, see Fig. 2. Each of these levers 52 carries a roller 55, andthe faces of these rollers normally lie close to an annular strip orraceway 56 on the disk of the pulley 2. When the pulley 2 shifts towardthe right, as viewed in Fig. 5, the levers swing outwardly on theirfulcrums 53 and actuate two. levers 56, which are rigidly attached tothe ends of the shaft 5 57 which carries the aforesaid rocking pinion35. For this purpose the levers 52 are provided with toes 58 whichengage the ends of the levers 56. In order to provide for adj usting theposition of the levers 56 with re spect to the shaft 57, the lever 56 issecured to the shaft by means of a segment 59 which is fixed on theshaft and provided with an arcuate slot through which a clamping bolt 60passes. Each of the levers 56 has a short arm 61 to which a spring 62 isattached, which tends to rotate the shaft 57 and normally holds the jaws24 and 25 clamped against the stock. The levers 56 should be adjusted sothat they normally lie near the toes 58, so that as soon as the movementof the toes 58 begins, the levers will be actuated, and the'pinionrocked to open the jaws. It is evident then that the actuation of therocking pinion 35 is controlled through the agency'of the cams 50.

The gage for limiting the forward movement of the stock is alsocontrolled through the agency of the cams, and this is preferablyaccomplished by means of the same levers 52 which control the levers 56.The gage is preferably movable, and is normally disposed in an inactiveposition, at which time it is withdrawn from the vicinity of the knives.When the knives have been withdrawn, however, the gage is moved into itsactive position and ap proaches the location of the knives. This gage isindicated by the numeral 63, and is preferably in the form of an arm,the end of which projectsover and is formed into a gage head 64. Thisgage head 64 presents a concave face 65 so that when the stock 4 comesagainst it. it engages only the edges of the stock. This form for thegage head increases the accuracy of the gage, because it sometimeshappens that near the central axis of the stock an equality orprojection 4a will be left by the knives. The edges of the end of thestock or log, however, are always accurately cut. and consequently thisgage will give accurate results in operation.

In order to hold the gage in its active or its inactive positions, weprefer mounting it on a fixed stud 6% (see Fig. 1). The gage arm 63 hasan adjusting toe 65. On this same stud 64 there is pivotally mounted anactuating arm 66 for the gage 63, and this arm carries two set screws 67one of which engages the toe 65, and the other of which engages the edgeof the gage 63. Evidently by unscrewing one of these set screws, andscrewing in the other, the angular position of the actuating arm 66 withrespect to the gage arm 63 can be adjusted, as desired. Of course, theseset-screws also enable the arm 66 to be held rigid with the gage 63. Thearm 66 is pulled upwardly by a spring 68, and it is normally held in afixed position by means of a roller 69 on the end of one of the levers52 which engages a socket 70 formed on the upper edge of the arm 66.Fig. 4: shows these parts in their normal position, that is to say, withthe gage 63 in its inactive position. When the shifting movement isdeveloped by the cams 50 and rollers 51, to release the jaws, the lever52 moves toward the right, see Fig. 5, and the roller 69 rolls out ofthe recess or notch 70 onto the adjacent edge of the lever 66. This hasthe effect of depressing the lever 66, and rocks the gage 63 into theposition in which it is indicated in full lines in Fig. 5. As soon asthe cams 50 pass off the rollers 51, the springs 62 operating throughthe levers 56 return the levers 52 to their normal position, so thattheroller 69 will move back into the socket 70. In order to enable thejaws 24: and 25 to be held open when desired, we provide the side of thelever 66 with a small bar 71. This bar normally rests on a small pin 72.In order to use it for the purpose suggested, it should be swung up intothe line with the axis of the roller 69, and the arm 52 swung toward ituntil the bar limits the further movement of the lever 52.

It will be noted that in the operation of this machine, the pulleys arecapable of unlimited rotation in the same direction, that is to say, themachine does not have to be reversed to withdraw the knives, and inoperation the knives are completely controlled by the continuousrevolutions of the pulleys.

It is understood that the embodiment of the invention described hereinis only one of the many embodiments our invention may take, and we donot wish to be limited in the practice of our invention, nor in ourclaims to the particular embodiment set forth.

In order to keep thestock or log 4L upright when the jaws 24 and 25open, we provide a small leaf spring 15 (see Fig. 10) that engages thefiat upper face of the log.

WVhat we claim is:

1. In a machine of the classdescribed, the combination of means forholding the stock, two independently driven coaxial rotatable members,means for revolving the same continuously at different speeds withrespect to each other, cutting mechanism associated with said rotatablemembers for cross-cut ting the stock, a cam on one of said rotatablemembers, and means carried by the other of said rotatable members, andactuated by said cam, for actuating said cutting mechanism.

2. In a machine of the class described, the combination of means forholding the stock, two independently driven coaxial rotatable members,means for driving the same continuously at different speeds with respectto each other, cutting mechanism including a knife guided on one of saidrotatable members to move across the stock, a cam on the other of saidrotatable members, and means engaging said cam for actuating said knife.

3. In a machine of the class described, the combination of means forholding the stock, two independently rotatable coaxial wheels, cuttingmechanism associated therewith for cross-cutting the stock, means forcontinuously revolving said wheels so as to produce a relative rotarymovement between the same, actuating mechanism for said cuttingmechanism associated with said wheels, and means for actuating saidcutting mechanism by the said relative rotary movement of said wheels.

a. In a machine of the class described, the

' combination of means for holding the stock,

two independently rotatable members, cutting mechanism including aknife, associated therewith for cross-cutting the stock, means fordriving said rotatable members so as to produce a re ative rotarymovement between the same, means associated with said rotary members andactuated by the said relative rotary movement of said members, to movethe knife across the stock and withdraw the knife thereafter, and meanscontrolled by the relative rotary position of said rotary members foreffecting a forward movement of said stock when the knife has beenwithdrawn.

5. In a machine of the class described, the combination of means forholding the stock, two independently driven rotatable members, cuttingmechanism associated therewith for cross-cutting the stock, actuatingmeans for said cutting mechanism actuated by a relative rotary movementof said rotary members, means for feeding the stockforward before thecut is taken, a movable gage for limiting the forward feeding movementof the stock before the cut is taken, and automatic means forwithdrawing said gage before each actuation of the cutting mechanism. I

6. In a machineof the class described, the combination of means forholding the stock, two independently rotatable members, cuttingmechanism including a knife, associated therewith, for cross-cutting thestock,

means for driving said rotatable members so as to produce a relativerotary movement between the same, means associated with said rotatablemembers and actuatedby the said relative rotary movement of saidmembers, to move the knife across the stock and withdraw the knifethereafter, means controlled by the relative rotary position of saidrotary members for effecting a forward movement of said stock when theknife has been withdrawn, and a. movable gage also controlled by saidrotary members for limiting the forward movement of the stock.

7. In a machine of the class described, the combination of means forholding the stock, two independently rotatable members, cuttingmechanism including aknife, associated therewith for cross-cutting thestock, means for driving said rotatable members so as to produce arelative rotary movement between the same, means associated with saidrotary members and actuated by the said relative rotary movement of saidmembers, to move the knife across the stock and withdraw the knifethereafter, a feed controlling member, means controlled thereby foreffecting a forward feeding movement of said stock,'and means foractuating said feed-controlling member b said rotary members conjointly,to cause t e feeding movement of the stock when the knife has beenwithdrawn.

8. In a machine of the class described, the combination of means forholding the stock, two independently rotatable members, cuttingmechanism including a knife, associated therewith for cross-cutting thestock, means for driving said rotatable members so as to produce arelative rotary movement between the same, means associated with saidrotary members and actuated by the said relative rotarymovement' of saidmembers, to move the knife across the stock and withdraw the knifethereafter, one of said rotatable members having cams, afeed-controlling mem ber actuated through the agency of said cams whenthe said rotatable members are in a relative position to hold said knifewithdrawn, and means actuated by said feed controlling member foreffecting the forward feeding movement of the. stock. 7

9. In a machine of the class described, the

combination of means for holding the stock, two adj acently mountedindependently rotatable members, one of said members being s'hiftable toand from the other, cutting mechanism including a knife associated withsaid rotatable members for cross-cutting the stock, means for drivingsaid rotatable members-so as to; nroduce a relative rotary movementbetween the same, means associated with said rotary members and actuatedby the said relative rotary movement of said members to move the knifeacross the stock and withdraw the knife thereafter, one of saidrotatable members having cams thereupon for shifting the shiftablerotatable member longitudinall on its axis when the knife has been withrawn, and means attuated by the said shifting movement of the shiftablerotatable member for effecting a forward feeding movement of said stockwhen the knife has been withdrawn.

10. In a machine of the class described, the combination of means forholding the stock, two adjacently mounted independently rotatablemembers, one of said members being shiftable to and from the other,cutting mechanism, including a knife associated with said rotatablemembers, for cross-cutting the stock, means for driving said rotatablemembers so as to produce a relative rotary movement between the same,means associated with said rotary members, and actuated by the saidrelative rotary movement of said members to move the knife across thestock and withdraw the knife thereafter, one of said rotatable membershaving cams thereupon for shifting the shiftable rotatable memberlongitudinally on its axis when the knife has been withdrawn, meansactuated by the said shifting movement of the shiftable rotatable memberfor releasing thestock from said holding means, and means for feedingthe stock forward when released.

11. In a machine of the class described, the combination of means forholding the stock, two adj acently mounted independently rotatablemembers, one of said members being shiftable to and from the other,cutting mechanism including a knife associated with said rotatablemembers for crosscutting the stock, means for driving said rotatablemembers so as to produce a relative rotary movement between the same,

means associated with said rotatable members, and actuated by the saidrelative rotary movement of said members, to move the knife across thestock and withdraw the knife thereafter, one of said rotatablemem bers.having thereupon for shifting the shiftable rotatable memberlongitudiated by said shiftable rotatable member nally onits axis whenthe knife has been withdrawn, a lever mounted so as to be actuwhen itshifts longitudinally on its axis, means actuated by said lever torelease the stock from said holding means, means for feeding the stockforward when released from said holding means, and a movable gagecontrolled by said lever, for limiting the forward movement of thestock.

12. In a machine of the class described, the combination of holdingmeans consisting of a pair of separable jaws for clamping the stock, twoadjacently mounted independently rotatable members, cutting mechanismincluding a knife associated with said rotatable members forcross-cutting the stock, means for driving said rotatable members so asto produce a relative rotary movement between the same, means associatedwith said rotary members and actuated by the said relative rotarymovement of said members to move the knife across the stock and withdrawthe knife thereafter, one of said rotatable members having camsthereupon, means actuated'through the agency of said cams for openingsaid jaws to release the stock, and means for feeding the stock forwardtoward the knife while the knife is withdrawn.

13. In a machine of the class described, the combination of holdingmeans consisting of a pair of separable jaws for clamping the stock, twoadj acently mounted independently rotatable members, cutting mechanismincluding a knife associated with said rotatable members forcross-cutting the stock, means for driving said rotatable members so asto produce a relative rotary movement between the same, means associatedwith said rotary members and actuated by the said relative rotarymovement of said members to move the knife. across the stock andwithdraw the knife thereafter, one of said rotatable members having camsthereupon, means actuated through the agency of said cams for openingsaid jaws to release the stock, means for feeding the stock forwardtoward the knife while the knife is withdrawn, and means also controlledthrough the agency of said cams for limiting the forward feedingmovement of the stock.

14. In a machine of the class described, the combination of asubstantially tubular arbor, two rotatable members mounted adj acentlyon said arbor, cutting mechanism including a knife, associatedtherewith, for cross-cutting the stock, means for driving said rotatablemembers so as to produce a relative rotary movement between the same,means associated with said rotatable members and actuated by the saidrelative rotary movement of said members to move the knife across thestock and withdraw the knife tubular arbor, means controlled conjointlyby said rotatable members for releasing said jaws, and means for movingthe stock for- Ward when the jaws are released, and when the knife hasbeen withdrawn.

15. In a machine of the class described, the combination of cuttingmechanism, means for feeding a length of stock past the cuttingmechanism to position the same to be severed, and a concave faced gageto engage the end of the stock at its edges whereby the gage face willclear any projection on the interior of the end face of the stock.

16. In a machine ofthe class described, the combination of means forholding the stock, two rotatable members, cutting mechanism including aknife, associated with said rotatable members for cross-cutting thestock, means for driving said rotatable members so as to produce arelative rotary movement between the same, means associated with saidrotatable members and actu ated by the said relative rotary movement ofsaid members to move the knife across the stock, and withdraw the knifethereafter, a movable gage for limiting the for ward feeding movement ofthe stock, a controlling member for holding said gage in an activeposition or in an inactive position, and means for actuating saidcontrolling member by said rotatable members conjointly.

17. In a machine of the class described, the combination of means forholding the stock, two rotatable members, cutting mechanism including aknife, associated with said rotatable members for cross-cutting thestock, means for driving said rotatable mem bers so as to produce arelative rotary movement between the same, means associated with saidrotatable members and actuated by the said relative rotary movement ofsaid members to move the knife across the stock, and withdraw the knifethereafter, a movable gage for limiting the forward feeding movement ofthe stock, a controlling member for holding said gage in an activeposition or in an inactive position, means for actuating saidcontrolling member by said rotatable members conjointly, and meansactuated by said controlling member for eflectin a forward feedingmovement of the stock when the knife has been withdrawn.

18. In a machine of the class described, the combination of means forholding the stock, two rotatable members, cuttin mechanism including aknife associated with said rotatable members for cross-cutting thestock,- means for driving said rotatable members so as to produce arelative rotary movement between the same, means associated with saidrotatable members and actuated by the said relative rotary movement ofsaid members to move the knife across the stock, and withdraw the knifethereafter, one of said rotatable members being shiftable on its axis ofrotation, cams on the other rotatable member, for shifting saidshiftable rotatable member when said rotatable members are in apredetermined relative rotary position, a pair of levers supportedadjacent said shiftable rotatable member, and actuated by the shiftingmovement thereof, and means controlled by said levers for effecting theforward movement of the stock when the knife has been withdrawn.

19. In a machine of the class described, the combination of means forholding the stock, two rotatable members, cutting mechanism including aknife associated With said rotatable members for crosscutting the stock,means for driving said rotatable members so as to produce a relativerotary movement between the same, means associated with said rotatablemembers and actuated by the said relative rotary movement of saidmembers to move the knife across the stock, and withdraw the knifethereafter, one of said rotatable members being shiftable on its axis ofrotation, cams on the other rotatable member for shifting said shiftabler0- tatable member when said rotatable members are in a predeterminedrelative rotary position, a pair of levers supported adja cent saidshiftable rotatable member, and actuated by the shifting movement of thesame when the knife has been withdrawn, and a movable gage alsocontrolled by said levers for limiting the forward movement of thestock.

20. In a machine of the class described, the combination of means forholding the stock, two adjacently mounted pulleys of differentdiameters, whereby the said pulleys are rotated at dilferent speeds whendriven by belts running at the same speed, cutting mechanism associatedwith said pulleys, and means for actuating the cutting mechanism by saidpulleys when in a predetermined relative position.

21. In a machine of the class described, the combination of means forholding the stock, two adjacently mounted pulleys of differentdiameters, whereby the said pulleys are rotated at different speeds whendriven by pulleys running at the same speed, cutting mechanismassociated with said pulleys, means for actuating the cutting mechanismby said pulleys when in a predetermined relative position, and meanscontrolled conjointly by said pulleys for effecting the feeding movementof the stock.

22. In a machine of the class described, the combination of means forholding the stock, two independently rotatable wheels driven so as toproduce a relative rotation between said wheels, one of said wheelshaving a disk with openings therein, knife actuating means mountedbehind said disk, and actuated by the relative rotation of said wheels,and knives moving on the outer face of said disk and connected with saidknife actuating means through said openings.

23. In a machine of the class described, the combination of a pair ofseparable jaws for -clamping the stock, means for separating said jawsto permit the stock to be fed forward, and a spring associated with oneof said jaws and engaging the face of the stock for holding the stockupright while the jaws are separated.

. 24a In a machine of the class described, the combination of means forholding the stock, two independently rotatable members, means for givingsaid rotatable members a differential rotary movement, cutting mechanismassociated with said rotatable members for cross-cutting the stock,actuated by said rotatable members when in predetermined positionsduring the said dif ferential rotary movement, and feeding means for thestock controlled conjointly by said rotatable members.

25. In a machine of the kind described, the combination of means forholding the stock, two independently rotatable co-aXial members, cuttingmechanism associated therewith for cross-cutting the stock, means forrevolving said members continuously in the same direction at differentspeeds, and means for actuating said cutting mechanism actuated by saidmembers when in a predetermined relative position.

26. In a machine of the kind described, the combination of means forholding the stock, two independently rotatable co-axial pulleys, beltsfor revolving the same at different speeds in the same direction toproduce a relative rotary movement between the same, cutting mechanismassociated with said pulleys for cross-cutting the stock, actuatingmechanism for actuating said cutting mechanism associated with saidpulleys, and means actuated by the pulleys in a predetermined relativeposition for actuating said cutting mechanism.

In testimony whereof we have hereunto set our hands.

JOHN E. MITCHELL. DENNIS PARKS.

